puppet: Include epmd on the list of do-not-auto-restart services.

This brings it into parity with the list of unattended-upgrade
packages.

puppet/zulip_ops/files/needrestart/zulip.conf

@@ -3,6 +3,7 @@ my @ignore = (
     qr/^memcached\.service$/,
     qr/^nginx\.service$/,
     qr/^postgresql(@[0-9a-zA-Z_-]+)?.service$/,
+    qr/^epmd\.service$/,
     qr/^rabbitmq-server\.service$/,
     qr/^redis-server\.service$/,
     qr/^supervisor\.service$/,